NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

6 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

Most carrier growth happens here, not at the prefix level: under number pooling, carriers receive individual 1,000-number blocks (e.g. 626-470-0XXX) within already-assigned prefixes. Assignments are initial assignments — the current serving carrier of individual numbers may differ due to portability.

Most active assignees, last 30 days — NPA 901
ONVOY, LLC - TN 4
NEW CINGULAR WIRELESS PCS, LLC - GA 1
E. RITTER COMMUNICATIONS, LLC 1
New assignments by month Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025 Oct 2025
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Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2020-08-12 901-519-3XXX 3000–3999Assigned ONVOY, LLC - TN 525E MEMPHIS TN
2020-08-12 901-519-4XXX 4000–4999Assigned ONVOY, LLC - TN 525E MEMPHIS TN
2020-08-11 901-538-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F MEMPHIS TN
2020-08-11 901-538-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F MEMPHIS TN
2020-08-11 901-538-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F MEMPHIS TN
2020-08-11 901-538-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F MEMPHIS TN
2020-07-29 901-321-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 MEMPHIS TN
2020-07-29 901-379-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 MEMPHIS TN
2020-07-29 901-506-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 MEMPHIS TN
2020-07-29 901-506-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 MEMPHIS TN
2020-07-29 901-506-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 MEMPHIS TN
2020-07-29 901-506-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 MEMPHIS TN
2020-07-29 901-506-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 MEMPHIS TN
2020-07-29 901-521-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 MEMPHIS TN
2020-07-27 901-506-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J MEMPHIS TN
2020-07-27 901-578-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2020-07-27 901-578-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2020-07-27 901-578-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2020-07-27 901-578-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2020-07-27 901-580-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2020-07-27 901-729-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2020-07-27 901-729-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2020-07-27 901-745-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2020-07-27 901-745-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2020-07-27 901-745-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2020-07-16 901-588-8XXX 8000–8999Assigned FRACTEL, LLC 965H MASON TN
2020-07-16 901-899-9XXX 9000–9999Assigned FRACTEL, LLC 965H MOSCOW TN
2020-07-16 901-955-5XXX 5000–5999Assigned FRACTEL, LLC 965H ROSEMARK TN
2020-07-15 901-699-9XXX 9000–9999Assigned FRACTEL, LLC 965H COVINGTON TN
2020-07-15 901-799-9XXX 9000–9999Assigned FRACTEL, LLC 965H COLLIERVL TN
2020-07-06 901-538-2XXX 2000–2999Assigned CSC WIRELESS, LLC 425J MEMPHIS TN
2020-07-02 901-459-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 SOMERVILLE TN
2020-07-02 901-459-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 SOMERVILLE TN
2020-06-18 901-519-9XXX 9000–9999Assigned HD CARRIER LLC 321J MEMPHIS TN
2020-06-15 901-821-3XXX 3000–3999Assigned METROPCS, INC. 5562 MEMPHIS TN
2020-06-11 901-325-5XXX 5000–5999Assigned ONVOY, LLC - TN 525E MEMPHIS TN
2020-06-11 901-763-6XXX 6000–6999Assigned ONVOY, LLC - TN 525E MEMPHIS TN
2020-06-11 901-763-8XXX 8000–8999Assigned ONVOY, LLC - TN 525E MEMPHIS TN
2020-06-04 901-287-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 MEMPHIS TN
2020-06-04 901-387-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 MEMPHIS TN
2020-06-04 901-395-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 MEMPHIS TN
2020-06-04 901-467-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 MEMPHIS TN
2020-06-04 901-467-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 MEMPHIS TN
2020-06-04 901-526-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 MEMPHIS TN
2020-06-04 901-526-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 MEMPHIS TN
2020-06-04 901-541-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 MEMPHIS TN
2020-06-04 901-542-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 MEMPHIS TN
2020-06-04 901-545-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 MEMPHIS TN
2020-06-04 901-584-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 MEMPHIS TN
2020-06-04 901-584-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 MEMPHIS TN

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.